CN115895438A - Transparent organic silicon coating for polycarbonate surface and preparation method thereof - Google Patents
Transparent organic silicon coating for polycarbonate surface and preparation method thereof Download PDFInfo
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- CN115895438A CN115895438A CN202211687086.0A CN202211687086A CN115895438A CN 115895438 A CN115895438 A CN 115895438A CN 202211687086 A CN202211687086 A CN 202211687086A CN 115895438 A CN115895438 A CN 115895438A
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- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 47
- 239000004417 polycarbonate Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000000576 coating method Methods 0.000 title abstract description 53
- 239000011248 coating agent Substances 0.000 title abstract description 49
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract description 36
- 229910052710 silicon Inorganic materials 0.000 title abstract description 36
- 239000010703 silicon Substances 0.000 title abstract description 36
- 229920001225 polyester resin Polymers 0.000 claims abstract description 46
- 239000004645 polyester resin Substances 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 8
- CCOQPNDCFRSIOZ-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2,2,2-trifluoroacetate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(F)(F)F CCOQPNDCFRSIOZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- AZQGFVRDZTUHBU-UHFFFAOYSA-N isocyanic acid;triethoxy(propyl)silane Chemical compound N=C=O.CCC[Si](OCC)(OCC)OCC AZQGFVRDZTUHBU-UHFFFAOYSA-N 0.000 claims abstract description 7
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 4
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 44
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 24
- XBZSBBLNHFMTEB-UHFFFAOYSA-N cyclohexane-1,3-dicarboxylic acid Chemical compound OC(=O)C1CCCC(C(O)=O)C1 XBZSBBLNHFMTEB-UHFFFAOYSA-N 0.000 claims description 22
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 22
- 239000011787 zinc oxide Substances 0.000 claims description 16
- CUGZWHZWSVUSBE-UHFFFAOYSA-N 2-(oxiran-2-ylmethoxy)ethanol Chemical compound OCCOCC1CO1 CUGZWHZWSVUSBE-UHFFFAOYSA-N 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 12
- 239000001384 succinic acid Substances 0.000 claims description 11
- NJRXVEJTAYWCQJ-UHFFFAOYSA-N thiomalic acid Chemical compound OC(=O)CC(S)C(O)=O NJRXVEJTAYWCQJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- 239000000376 reactant Substances 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 9
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 6
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000004447 silicone coating Substances 0.000 claims 10
- JWAJUTZQGZBKFS-UHFFFAOYSA-N n,n-diethylprop-2-en-1-amine Chemical compound CCN(CC)CC=C JWAJUTZQGZBKFS-UHFFFAOYSA-N 0.000 claims 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 2
- 150000001350 alkyl halides Chemical class 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 2
- 239000003112 inhibitor Substances 0.000 claims 2
- 238000006116 polymerization reaction Methods 0.000 claims 2
- 229920006395 saturated elastomer Polymers 0.000 claims 2
- 238000005406 washing Methods 0.000 claims 2
- 125000004432 carbon atom Chemical group C* 0.000 claims 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 claims 1
- 238000001132 ultrasonic dispersion Methods 0.000 claims 1
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 7
- 238000009835 boiling Methods 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000001782 photodegradation Methods 0.000 abstract description 5
- 239000008367 deionised water Substances 0.000 abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 abstract description 4
- 230000006750 UV protection Effects 0.000 abstract description 2
- 230000003712 anti-aging effect Effects 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 13
- 239000011347 resin Substances 0.000 description 13
- 230000006872 improvement Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000032683 aging Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- BVFSYZFXJYAPQJ-UHFFFAOYSA-N butyl(oxo)tin Chemical compound CCCC[Sn]=O BVFSYZFXJYAPQJ-UHFFFAOYSA-N 0.000 description 5
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 4
- OQBLGYCUQGDOOR-UHFFFAOYSA-L 1,3,2$l^{2}-dioxastannolane-4,5-dione Chemical compound O=C1O[Sn]OC1=O OQBLGYCUQGDOOR-UHFFFAOYSA-L 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- ZBSOGTZYMVJKTF-UHFFFAOYSA-K 4-trichlorostannylbutane-1,1-diol Chemical compound OC(O)CCC[Sn](Cl)(Cl)Cl ZBSOGTZYMVJKTF-UHFFFAOYSA-K 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- XPBBUZJBQWWFFJ-UHFFFAOYSA-N fluorosilane Chemical compound [SiH3]F XPBBUZJBQWWFFJ-UHFFFAOYSA-N 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical group [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- XBIUWALDKXACEA-UHFFFAOYSA-N 3-[bis(2,4-dioxopentan-3-yl)alumanyl]pentane-2,4-dione Chemical group CC(=O)C(C(C)=O)[Al](C(C(C)=O)C(C)=O)C(C(C)=O)C(C)=O XBIUWALDKXACEA-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical group C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960003328 benzoyl peroxide Drugs 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- FQYHHEJETOLDHR-UHFFFAOYSA-K butyl(chloro)tin(2+);dihydroxide Chemical compound CCCC[Sn](O)(O)Cl FQYHHEJETOLDHR-UHFFFAOYSA-K 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000005935 nucleophilic addition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920000734 polysilsesquioxane polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009044 synergistic interaction Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of coatings, and provides a transparent organic silicon coating for a polycarbonate surface and a preparation method thereof, which solve the problems that the surface hardness and the wear resistance of a material can only be improved by a coating coated on the existing polycarbonate surface, and the polycarbonate is easy to generate a photodegradation reaction. The transparent organic silicon coating comprises the following raw material components in parts by weight: 32 to 48 portions of phenyl triethoxysilane, 40 to 50 portions of 3-trifluoroacetoxy propyl trimethoxysilane, 45 to 65 portions of isocyanate propyl triethoxysilane, 25 to 50 portions of deionized water, 80 to 120 portions of solvent, 1.8 to 3.2 portions of polyester resin I, 1.2 to 2 portions of polyester resin II, 0.6 to 1.2 portions of curing agent, 8 to 16 portions of modified zinc oxide and 0 to 1 portion of auxiliary agent. The prepared organic silicon coating has high hardness, wear resistance, good adhesive force, excellent boiling resistance, antibacterial property, ultraviolet resistance and anti-aging performance.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a transparent organic silicon coating for a polycarbonate surface and a preparation method thereof.
Background
Polycarbonate is a thermoplastic resin with a molecular main chain containing a carbonate bond structure, has the advantages of high transparency, good impact resistance, heat resistance, cold resistance, stable size, high light transmittance and the like, and is widely applied to the fields of automobiles, aviation, electronic and electric appliances, medical appliances and the like. However, the polycarbonate material itself has the following disadvantages: first, the surface hardness is low, the abrasion resistance is poor, and it is easily abraded. Secondly, the resistance to ultraviolet radiation is poor and photodegradation reactions are likely to occur. In order to improve the safety of the material, prolong its service life and expand the range of application fields, it is common practice to coat the surface of polycarbonate with a coating, thereby overcoming the above-mentioned disadvantages.
Patent number CN201010530398.1 discloses a wear-resistant coating material without a base coat on the surface of polycarbonate and a preparation method thereof, wherein the wear-resistant coating material comprises the following raw materials in percentage by mass: alkoxysilanes of at least two functionalities and combinations thereof 133-160; 5-100 parts of acidic silica sol with pH = 2-6; 0 to 50 portions of deionized water; 0.002-8 of acid catalyst; 25-100 parts of diluent; polymer polyol 0.5-10; 5-30 parts of silane coupling agent; 0.1 to 1 portion of flatting agent; 0.3 to 2 portions of curing agent. The surface energy of the polycarbonate is small (38-40 mN/m), and the polycarbonate is difficult to wet and combine, so that the adhesion of a plurality of coatings on the surface of the polycarbonate is poor, and the adhesion effect needs to be improved by adopting a primer. The wear-resistant coating provided by the invention can be well adhered to the surface of polycarbonate without a primer, the hardness of the surface of polycarbonate plastic is increased, and the wear-resistant coating has a wear-resistant function.
Patent No. CN201810131322.8 discloses a preparation method of a high-adhesion wear-resistant coating for polycarbonate, which comprises the following steps: weighing the following components in parts by weight: 30-42 parts of chlorinated polypropylene resin, 18-35 parts of modified resin, 1.2-1.8 parts of BYK-163 type dispersant, 0.2-0.6 part of BYK-071 type defoamer, 0.05-0.08 part of dibutyltin dilaurate, 4-8 parts of cellulose acetate butyrate, 48-60 parts of solvent, 3-8 parts of curing agent, 2-5 parts of white corundum micropowder, 1-3 parts of superfine mica powder, 0.5-1.2 parts of silane coupling agent and 4-8 parts of porous inorganic particle material; (2) Mixing chlorinated polypropylene resin and modified resin, stirring for 5-10 min, adding a BYK-163 type dispersing agent, a BYK-071 type defoaming agent, dibutyltin dilaurate, cellulose acetate butyrate, white corundum micropowder, superfine mica powder and a porous inorganic particle material under the stirring state, grinding to the fineness of less than or equal to 25 mu m by using a sand mill, then adding a part of solvent, heating to 30-40 ℃, refluxing for 1h, adding a silane coupling agent and a curing agent, cooling to room temperature, and diluting with the rest of solvent. The coating prepared by the invention has high adhesive force, water resistance and excellent wear resistance.
The coating material for the polycarbonate has good adhesive force, wear resistance and hardness, but the ultraviolet resistance and aging resistance are required to be further improved, and the problem that the polycarbonate is easy to generate photodegradation reaction can not be effectively improved.
Disclosure of Invention
Therefore, aiming at the above content, the invention provides a transparent organic silicon coating for a polycarbonate surface and a preparation method thereof, which solve the problems that the existing coating for coating the polycarbonate surface can only improve the surface hardness and the wear resistance of a polycarbonate material, and can not effectively improve the polycarbonate which is easy to generate a photodegradation reaction.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a transparent organic silicon coating for a polycarbonate surface comprises the following raw material components in parts by weight: 32-48 parts of phenyltriethoxysilane, 40-50 parts of 3-trifluoroacetoxypropyltrimethoxysilane, 45-65 parts of isocyanate propyltriethoxysilane, 80-120 parts of solvent, 1.8-3.2 parts of polyester resin I, 1.2-2 parts of polyester resin II, 0.6-1.2 parts of curing agent, 8-16 parts of modified zinc oxide and 0-1 part of auxiliary agent, wherein the solvent is prepared by mixing butanone, ethylene glycol dimethyl ether and butyl acetate according to the mass ratio of 5;
the polyester resin I is prepared by the following steps: adding 4,4' -dihydroxy diphenylmethane into a reaction kettle, stirring and heating to 140-160 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, succinic acid and a catalyst I, heating to 230-240 ℃ at the speed of 1-2 ℃/min, carrying out heat preservation reaction for 1.5-2.5 h, then cooling to 90-100 ℃, adding ethylene glycol glycidyl ether and tetrabutylammonium bromide, stirring and reacting until the acid value of a reactant is reduced to below 5mgKOH/g, and stopping the reaction to obtain a polyester resin I;
the polyester resin II is prepared by the following steps: adding 4,4' -dihydroxy diphenylmethane into a reaction kettle, stirring and heating to 140-160 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, mercaptosuccinic acid and a catalyst II, heating to 210-220 ℃ at the speed of 1-2 ℃/min, stirring and reacting until the acid value of reactants is not changed, and stopping the reaction to obtain the polyester resin II.
The further improvement is that: the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the succinic acid to the ethylene glycol glycidyl ether to the catalyst I is 1.
The further improvement is that: the addition amount of the tetrabutylammonium bromide is 0.6-1.2% of the mass of the ethylene glycol glycidyl ether.
The further improvement is that: the mass ratio of the 4,4' -dihydroxy diphenylmethane, the 1, 3-cyclohexanedicarboxylic acid, the mercaptosuccinic acid and the catalyst II is (1).
The further improvement is that: the catalyst I and the catalyst II are any one of monobutyl tin oxide, dibutyl tin oxide, dihydroxy butyl tin chloride and stannous oxalate, and the catalyst I and the catalyst II can be the same substance or different substances.
The further improvement is that: the preparation method of the modified zinc oxide comprises the following steps:
(1) Adding N, N-diethyl allylamine and a polymerization inhibitor into an organic solvent, adding saturated alkyl halide with 8-12 carbon atoms, heating to 64-72 ℃, and stirring for reaction for 30-50 hours to obtain a quaternary ammonium salt monomer;
(2) Adding nano zinc oxide into ethanol, performing ultrasonic dispersion for 20-40 min, adding mercaptopropyl trimethoxy silane, stirring, heating to 70-80 ℃, keeping the temperature for 2-4 h, filtering, washing and drying after the reaction is finished, transferring the dried powder into a reactor filled with water, simultaneously adding a quaternary ammonium salt monomer and octavinyl silsesquioxane, stirring and mixing uniformly, adding a photoinitiator, performing mercapto-alkene click chemical reaction under the irradiation of ultraviolet light, and finally filtering, washing and drying to obtain the modified zinc oxide.
The further improvement is that: the molar ratio of the N, N-diethyl allylamine to the saturated alkyl halide is 1.2-1.6, and the addition amount of the polymerization inhibitor is 0.05-0.15% of the mass of the N, N-diethyl allylamine.
The further improvement is that: the mass ratio of the nano zinc oxide to the mercaptopropyl trimethoxy silane to the quaternary ammonium salt monomer to the octavinyl silsesquioxane is 1.
The further improvement is that: the addition amount of the photoinitiator is 0.3-0.6% of the total mass of the quaternary ammonium salt monomer and the octavinyl silsesquioxane.
The further improvement is that: the ultraviolet light irradiation time is 10-30 min, and the irradiation intensity is 300-600 mW/cm 2 。
The further improvement is that: the auxiliary agent is a leveling agent.
By adopting the technical scheme, the invention has the beneficial effects that:
the organic silicon coating provided by the invention takes silicon resin as a main component, and the structure and the composition of the organic silicon coating determine the basic performance of the organic silicon coating. The invention adopts three silane monomers, and the silicone resin formed by hydrolysis, dehydration and polycondensation has high crosslinking degree, thereby effectively improving the hardness and the wear resistance of the organic silicon coating. Due to the introduction of the fluorosilane monomer, the surface tension of the silicon resin is reduced, the silicon resin is easy to wet and spread on the surface of the polycarbonate, and the adhesion of an organic silicon coating is improved. Acetoxyl in the fluorosilane monomer structure can increase the interaction force between the silicon resin and the base material, and promote the mutual diffusion and mutual dissolution of the coating and the base material molecules.
The polyester resin I is a product obtained by using 4,4' -dihydroxy diphenylmethane, 1, 3-cyclohexanedicarboxylic acid and succinic acid as main raw materials, performing esterification reaction to form a carboxyl-terminated compound, and performing ring-opening reaction with ethylene glycol glycidyl ether. The polyester resin II is a product obtained by esterification reaction of 4,4' -dihydroxy diphenylmethane, 1, 3-cyclohexanedicarboxylic acid and mercaptosuccinic acid. The polyester resin I and the polyester resin II respectively contain active hydroxyl and sulfydryl, and are closely connected with each other through nucleophilic addition reaction with isocyanate groups in a silicon resin structure. Meanwhile, the molecules of the polyester resin I and the polyester resin II contain ester group structures similar to polycarbonate, so that the polyester resin I and the polyester resin II have good affinity to a polycarbonate substrate, and can generate permeation and adhesion phenomena on the surface of the polycarbonate, thereby obviously improving the adhesion of the organic silicon coating on the polycarbonate substrate. The research process unexpectedly discovers that the polyester resin II and the polyester resin I have a synergistic interaction effect, so that an effect of 1+1 & gt 2 is generated, the wetting and the penetration of the organic silicon coating to the polycarbonate substrate are promoted, a plurality of anchor points are formed after the organic silicon coating is cured and are tightly combined with the polycarbonate substrate, the adhesion of the organic silicon coating to the polycarbonate substrate is obviously improved, and no other reagent is needed to be coated. However, ester bonds are easy to hydrolyze, and the addition of the traditional polyester resin into a formula system easily causes poor boiling resistance of an organic silicon coating and greatly reduces the adhesive force. According to the invention, a six-membered ring with a larger steric hindrance effect is introduced into the polyester resin structure, so that the hydrolysis phenomenon of an ester bond is greatly reduced, and the boiling resistance of a paint film is improved.
Polycarbonate is easy to undergo photodegradation reaction under the action of ultraviolet light, so that the coated coating has excellent weather resistance and plays a role in delaying the aging of a substrate. By adding the nano zinc oxide into the formula, the ultraviolet aging resistance of the organic silicon coating can be improved by utilizing the absorption and scattering effects of the nano zinc oxide on ultraviolet rays. In addition, the zinc ions of the nano zinc oxide can be combined with sulfhydryl groups on proteins in pathogenic bacteria and viruses, so that the activity of the pathogenic bacteria and the viruses is inhibited. Under the irradiation of ultraviolet rays, the nano zinc oxide can also generate hole-electron pairs, active holes and electrons respectively migrate to the surfaces of particles from a valence band and a conduction band of the nano zinc oxide, hydrated hydroxyl adsorbed on the surfaces is converted into hydroxyl radicals, and oxygen adsorbed on the surfaces is converted into atomic oxygen; hydroxyl radicals have a very strong oxidizing power, killing most bacteria and viruses. However, the interface compatibility of the nano zinc oxide and the organic silicon resin matrix is poor, the specific surface area and the surface energy of the nano zinc oxide are large, and the agglomeration phenomenon is easy to occur, so that the nano zinc oxide is difficult to uniformly disperse in a system, and the due effect of a nano material cannot be exerted. The invention carries out surface modification on nano zinc oxide, firstly, mercaptopropyl trimethoxysilane is utilized to react with hydroxyl on the surface of nano zinc oxide particles, and the mercaptopropyl trimethoxysilane is grafted on the surface of the nano zinc oxide particles; and introducing quaternary ammonium groups and cage polysilsesquioxane by ultraviolet light-initiated sulfydryl-alkene click chemistry reaction. The surface modification improves the agglomeration phenomenon of the nano zinc oxide, can be compatible with resin groups, and exerts the ultraviolet aging resistance and the antibacterial property of the nano zinc oxide; and the introduction of the quaternary ammonium group further improves the antibacterial property of the organic silicon coating, and simultaneously enables the modified zinc oxide particles to have positive charges, shields corrosive particles in the environment and improves the weather resistance of the organic silicon coating. In addition, the octavinyl silsesquioxane belongs to a compound with a nano molecular size cage-shaped structure, and is introduced into a formula system, so that the thermal stability and the mechanical property of the organic silicon coating can be improved, and the defect of poor flame retardance of polycarbonate is overcome.
Detailed Description
The following detailed description will be provided for the embodiments of the present invention with reference to specific embodiments, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
Unless otherwise indicated, the techniques used in the examples are conventional and well known to those skilled in the art, and the reagents and products used are also commercially available. The source, trade name and if necessary the constituents of the reagent used are indicated at the first appearance.
Example 1
A transparent organic silicon coating for a polycarbonate surface comprises the following raw material components in parts by weight: 32 parts of phenyltriethoxysilane, 40 parts of 3-trifluoroacetoxypropyltrimethoxysilane, 45 parts of isocyanate propyltriethoxysilane, 80 parts of solvent, 1.8 parts of polyester resin I, 1.2 parts of polyester resin II, 0.6 part of curing agent, 8 parts of modified zinc oxide and 0.1 part of leveling agent, wherein the curing agent is dibutyltin dilaurate;
the solvent is formed by mixing butanone, ethylene glycol dimethyl ether and butyl acetate according to the mass ratio of 5.
The polyester resin I is prepared by the following steps: adding 4,4 '-dihydroxydiphenylmethane into a reaction kettle, stirring and heating to 140 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, succinic acid and monobutyltin oxide, heating to 230 ℃ at the speed of 1 ℃/min, keeping the temperature for reaction for 1.5h, then cooling to 90 ℃, adding ethylene glycol glycidyl ether and tetrabutyl ammonium bromide, stirring and reacting until the acid value of a reactant is reduced to be below 5mgKOH/g, and stopping the reaction to obtain the polyester resin I, wherein the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the succinic acid to the ethylene glycol glycidyl ether to the monobutyltin oxide is 1.
The polyester resin II is prepared by the following steps: adding 4,4 '-dihydroxydiphenylmethane into a reaction kettle, stirring and heating to 140 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, mercaptosuccinic acid and dihydroxybutyltin chloride, heating to 210 ℃ at the speed of 1 ℃/min, stirring and reacting until the acid value of reactants is not changed, and stopping the reaction to obtain a polyester resin II, wherein the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the mercaptosuccinic acid to the dihydroxybutyltin chloride is 1.
The preparation method of the modified zinc oxide comprises the following steps:
(1) Adding N, N-diethyl allylamine and p-hydroxyanisole into an organic solvent, adding 1-bromooctane, heating to 64 ℃, stirring and reacting for 50 hours to obtain a quaternary ammonium salt monomer, wherein the molar ratio of the N, N-diethyl allylamine to the 1-bromooctane is 1.2, and the addition amount of the p-hydroxyanisole is 0.05 percent of the mass of the N, N-diethyl allylamine;
(2) Adding nano zinc oxide into ethanol, performing ultrasonic dispersion for 20 min, adding mercaptopropyl trimethoxy silane, stirring, heating to 70 ℃, preserving heat for 4h, filtering, washing and drying after the reaction is finished, transferring the dried powder into a reactor filled with water, simultaneously adding a quaternary ammonium salt monomer and octavinyl silsesquioxane, stirringMixing well, adding 2, 4-dihydroxy benzophenone under irradiation intensity of 300mW/cm 2 Irradiating 30min under ultraviolet light, and finally filtering, washing and drying to obtain modified zinc oxide;
the mass ratio of the nano zinc oxide to the mercaptopropyl trimethoxy silane to the quaternary ammonium salt monomer to the octavinyl silsesquioxane is 1.8.
Dropwise adding a mixed solution of deionized water, ethyl acetate and glacial acetic acid into a reactor filled with phenyltriethoxysilane, 3-trifluoroacetoxypropyltrimethoxysilane and isocyanate propyltriethoxysilane, heating to 80 ℃ under stirring, reacting for 6h, and distilling to remove ethyl acetate, redundant deionized water and glacial acetic acid after the reaction is finished to obtain an organic silicon resin prepolymer; and adding the solvent, the polyester resin I, the polyester resin II, the curing agent, the modified zinc oxide and the flatting agent into the organic silicon resin prepolymer, and uniformly mixing to obtain the organic silicon coating.
Example 2
A transparent organic silicon coating for a polycarbonate surface comprises the following raw material components in parts by weight: 40 parts of phenyltriethoxysilane, 45 parts of 3-trifluoroacetoxypropyltrimethoxysilane, 55 parts of isocyanate propyltriethoxysilane, 100 parts of solvent, 2.5 parts of polyester resin I, 1.6 parts of polyester resin II, 0.9 part of curing agent, 12 parts of modified zinc oxide and 0.5 part of leveling agent, wherein the curing agent is tetrabutylammonium hydroxide;
the polyester resin I is prepared by the following steps: adding 4,4 '-dihydroxydiphenylmethane into a reaction kettle, stirring and heating to 150 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, succinic acid and dibutyl tin oxide, heating to 235 ℃ at the speed of 1.5 ℃/min, keeping the temperature for reaction for 2h, then cooling to 95 ℃, adding ethylene glycol glycidyl ether and tetrabutyl ammonium bromide, stirring and reacting until the acid value of a reactant is reduced to be below 5mgKOH/g, and stopping the reaction to obtain the polyester resin I, wherein the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the succinic acid to the ethylene glycol glycidyl ether to the dibutyl tin oxide is 1.75.
The polyester resin II is prepared by the following steps: adding 4,4 '-dihydroxydiphenylmethane into a reaction kettle, stirring and heating to 150 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, mercaptosuccinic acid and dibutyltin oxide, heating to 215 ℃ at the speed of 1.5 ℃/min, stirring and reacting until the acid value of reactants is not changed, and stopping the reaction to obtain the polyester resin II, wherein the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the mercaptosuccinic acid to the dibutyltin oxide is 1.
The preparation method of the modified zinc oxide comprises the following steps:
(1) Adding N, N-diethyl allylamine and 2-tert-butyl hydroquinone into an organic solvent, adding bromo-N-decane, heating to 68 ℃, and stirring for reaction for 40 hours to obtain a quaternary ammonium salt monomer, wherein the molar ratio of the N, N-diethyl allylamine to the bromo-N-decane is 1.4, and the addition amount of the 2-tert-butyl hydroquinone is 0.1% of the mass of the N, N-diethyl allylamine;
(2) Adding nano zinc oxide into ethanol, ultrasonically dispersing for 30min, adding mercaptopropyl trimethoxy silane, stirring, heating to 75 ℃, preserving heat for 3h, filtering, washing and drying after the reaction is finished, transferring the dried powder into a reactor filled with water, simultaneously adding quaternary ammonium salt monomer and octavinyl silsesquioxane, stirring and mixing uniformly, adding benzoin dimethyl ether, and irradiating at the irradiation intensity of 500mW/cm 2 Irradiating 20 min under ultraviolet light, and finally filtering, washing and drying to obtain modified zinc oxide;
the mass ratio of the nano zinc oxide to the mercaptopropyl trimethoxy silane to the quaternary ammonium salt monomer to the octavinyl silsesquioxane is 1.2.
Example 3
A transparent organic silicon coating for a polycarbonate surface comprises the following raw material components in parts by weight: 48 parts of phenyltriethoxysilane, 50 parts of 3-trifluoroacetoxypropyltrimethoxysilane, 65 parts of isocyanate propyltriethoxysilane, 120 parts of solvent, 3.2 parts of polyester resin I, 2 parts of polyester resin II, 1.2 parts of curing agent, 16 parts of modified zinc oxide and 1 part of flatting agent, wherein the curing agent is aluminum acetylacetonate;
the polyester resin I is prepared by the following steps: adding 4,4 '-dihydroxydiphenylmethane into a reaction kettle, stirring and heating to 160 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, succinic acid and stannous oxalate, heating to 240 ℃ at the speed of 2 ℃/min, keeping the temperature for reaction for 2.5h, then cooling to 100 ℃, adding ethylene glycol glycidyl ether and tetrabutylammonium bromide, stirring and reacting until the acid value of reactants is reduced to be below 5mgKOH/g, and stopping the reaction to obtain the polyester resin I, wherein the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the succinic acid to the ethylene glycol glycidyl ether to the stannous oxalate is 1.9.
The polyester resin II is prepared by the following steps: adding 4,4 '-dihydroxydiphenylmethane into a reaction kettle, stirring and heating to 160 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, mercaptosuccinic acid and monobutyltin oxide, heating to 220 ℃ at the speed of 2 ℃/min, stirring and reacting until the acid value of reactants is not changed, and stopping the reaction to obtain the polyester resin II, wherein the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the mercaptosuccinic acid to the monobutyltin oxide is 1.1.
The preparation method of the modified zinc oxide comprises the following steps:
(1) Adding N, N-diethyl allylamine and hydroquinone into an organic solvent, adding bromo-N-dodecane, heating to 72 ℃, stirring and reacting for 30h to obtain a quaternary ammonium salt monomer, wherein the molar ratio of the N, N-diethyl allylamine to the bromo-N-dodecane is 1.6, and the addition amount of the hydroquinone is 0.15% of the mass of the N, N-diethyl allylamine;
(2) Adding nano zinc oxide into ethanol, performing ultrasonic dispersion for 40min, adding mercaptopropyl trimethoxy silane, stirring, heating to 80 ℃, preserving heat for 2h, filtering, washing and drying after the reaction is finished, transferring the dried powder to a containerAdding quaternary ammonium salt monomer and octavinyl silsesquioxane into a reactor with water, stirring and mixing uniformly, adding diphenylethanone, and irradiating at the intensity of 600mW/cm 2 Irradiating 10 min under ultraviolet light, and finally filtering, washing and drying to obtain modified zinc oxide;
the mass ratio of the nano zinc oxide to the mercaptopropyl trimethoxy silane to the quaternary ammonium salt monomer to the octavinyl silsesquioxane is 1.5.
Performance testing
The organic silicon coatings prepared in examples 1 to 3 were coated on the surface of a polycarbonate substrate by curtain coating, and then baked for 2 hours in a 120 ℃ drying oven after surface drying. The hardness, wear resistance, boiling resistance, ultraviolet aging resistance, antibiosis, flame retardance and other properties of the coating are tested. Wherein the coating hardness is tested according to GB/T6739-2006; the adhesion of the coating is tested according to GB/T9286-1998; the boiling resistance of the coating is tested according to GB/T1733-1993, and the ultraviolet aging resistance of the coating is tested according to GB/T23987-2009; the flame retardance of the coating is tested according to GB/T2406.2-2009; the wear resistance test method of the coating film comprises the following steps: the sample was placed in 0000 with a 1kg load # And (3) rubbing the surface of the sample back and forth for 20 times under steel wool, recording that 0-5 scratches are excellent, 5-10 scratches are good, and more than 10 scratches are poor, and judging the wear resistance of the coating according to the number of scratches. The test results are shown in table 1.
TABLE 1
The antibacterial property of the coating is tested according to GB/T21866-2008, and the average antibacterial rate and the average durability rate of the staphylococcus aureus and the escherichia coli are calculated by taking the antibacterial effect on the staphylococcus aureus and the escherichia coli as an example, and the results are shown in Table 2.
TABLE 2
As can be seen from tables 1 and 2, the transparent organic silicon coating prepared by the invention has excellent comprehensive performance, not only has excellent hardness, wear resistance, adhesive force and boiling resistance, but also shows good ultraviolet aging resistance, flame retardance and antibacterial property.
The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.
Claims (10)
1. A transparent silicone coating for polycarbonate surfaces, characterized by: the material comprises the following raw material components in parts by weight: 32 to 48 portions of phenyltriethoxysilane, 40 to 50 portions of 3-trifluoroacetoxypropyltrimethoxysilane, 45 to 65 portions of isocyanate propyltriethoxysilane, 80 to 120 portions of solvent, 1.8 to 3.2 portions of polyester resin I, 1.2 to 2 portions of polyester resin II, 0.6 to 1.2 portions of curing agent, 8 to 16 portions of modified zinc oxide and 0 to 1 portion of auxiliary agent;
the polyester resin I is prepared by the following steps: adding 4,4' -dihydroxy diphenylmethane into a reaction kettle, stirring and heating to 140-160 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, succinic acid and a catalyst I, heating to 230-240 ℃ at the speed of 1-2 ℃/min, carrying out heat preservation reaction for 1.5-2.5 h, then cooling to 90-100 ℃, adding ethylene glycol glycidyl ether and tetrabutylammonium bromide, stirring and reacting until the acid value of a reactant is reduced to below 5mgKOH/g, and stopping the reaction to obtain a polyester resin I;
the polyester resin II is prepared by the following steps: adding 4,4' -dihydroxy diphenylmethane into a reaction kettle, stirring and heating to 140-160 ℃, then adding 1, 3-cyclohexanedicarboxylic acid, mercaptosuccinic acid and a catalyst II, heating to 210-220 ℃ at the speed of 1-2 ℃/min, stirring and reacting until the acid value of a reactant is not changed, and stopping the reaction to obtain the polyester resin II.
2. A transparent silicone coating for polycarbonate surfaces according to claim 1, characterized in that: the mass ratio of the 4,4' -dihydroxydiphenylmethane to the 1, 3-cyclohexanedicarboxylic acid to the succinic acid to the ethylene glycol glycidyl ether to the catalyst I is 1.
3. A transparent silicone coating for polycarbonate surfaces according to claim 1, characterized in that: the addition amount of the tetrabutylammonium bromide is 0.6-1.2% of the mass of the glycol glycidyl ether.
4. A transparent silicone coating for polycarbonate surfaces according to claim 1, characterized in that: the mass ratio of the 4,4' -dihydroxy diphenylmethane, the 1, 3-cyclohexanedicarboxylic acid, the mercaptosuccinic acid and the catalyst II is (1).
5. A transparent silicone coating for polycarbonate surfaces according to claim 1, characterized in that: the preparation method of the modified zinc oxide comprises the following steps:
(1) Adding N, N-diethyl allylamine and a polymerization inhibitor into an organic solvent, adding saturated alkyl halide with 8-12 carbon atoms, heating to 64-72 ℃, and stirring for reaction for 30-50 hours to obtain a quaternary ammonium salt monomer;
(2) Adding nano zinc oxide into ethanol, performing ultrasonic dispersion for 20-40 min, adding mercaptopropyl trimethoxy silane, stirring, heating to 70-80 ℃, keeping the temperature for 2-4 h, filtering, washing and drying after the reaction is finished, transferring the dried powder into a reactor filled with water, simultaneously adding quaternary ammonium salt monomer and octavinyl silsesquioxane, stirring and mixing uniformly, adding a photoinitiator, performing mercapto-alkene click chemical reaction under the irradiation of ultraviolet light, and finally filtering, washing and drying to obtain the modified zinc oxide.
6. A transparent silicone coating for polycarbonate surfaces according to claim 5, characterized in that: the molar ratio of the N, N-diethyl allylamine to the saturated alkyl halide is 1.2-1.6, and the addition amount of the polymerization inhibitor is 0.05-0.15% of the mass of the N, N-diethyl allylamine.
7. A transparent silicone coating for polycarbonate surfaces according to claim 5, characterized in that: the mass ratio of the nano zinc oxide to the mercaptopropyl trimethoxy silane to the quaternary ammonium salt monomer to the octavinyl silsesquioxane is 1.
8. A transparent silicone coating for polycarbonate surfaces according to claim 5, characterized in that: the addition amount of the photoinitiator is 0.3-0.6% of the total mass of the quaternary ammonium salt monomer and the octavinyl silsesquioxane.
9. A transparent silicone coating for polycarbonate surfaces according to claim 5, characterized in that: the ultraviolet light irradiation time is 10-30 min, and the irradiation intensity is 300-600 mW/cm 2 。
10. A transparent silicone coating for polycarbonate surfaces according to claim 1, characterized in that: the assistant is a leveling agent.
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